docs: def clean_url(self):
          """
          Make sure the URL provided matches the instagram URL format.
          """
          url = self.cleaned_data['url']
  
          if url:
              pattern = re.compile(r'https?://(www\.)?instagr(\.am|am\.com)/p/\S+')
              if not pattern.match(url):
                  raise forms.ValidationError('Please provide a valid instagram link.')
  
          return url